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US Patent: 1,532,297
Calipers
Patentees: Carl L. Bausch (exact or similar names) - Rochester, Monroe County, NY Edwin Hart (exact or similar names) - Rochester, Monroe County, NY USPTO Classifications: 116/303, 116/DIG.6, 33/800 Tool Categories: metalworking tools : machinist tools : measuring tools : indicating calipers Assignees: Bausch & Lomb Optical Co. - Rochester, Monroe County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 14, 1921 Granted: Apr. 07, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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